Swift Strider wrote:
... I don't know of anywhere that does that using that link. Some times recognise the embed code of a video which looks like this
<iframe width="560" height="315" src="https://www.youtube.com/embed/Jc09rtFWYms" frameborder="0" allowfullscreen></iframe>
And will automatically embed it. But even if you did that you'd still need to use the bbcode to put the video into a spoiler tag because otherwise users who can't handle lots of embedded videos or graphics will have trouble loading the page.
I don't understand how someone would have trouble loading a forum page when the average speed of the internet now a days is 12-20MBps. Several years ago that may be the problem. Also, the videos are just a thumbnail and the spoiler tag is time consuming clicking on each one just to see a video.